Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!ut-emx!myers
From: myers@ut-emx.uucp (Eric Myers)
Newsgroups: comp.text.tex
Subject: Re: Feynman slash -- question
Message-ID: <45048@ut-emx.uucp>
Date: 4 Mar 91 19:19:17 GMT
References: <1960@ruunsa.fys.ruu.nl>
Organization: Center for Relativity, University of Texas
Lines: 32

In article <1960@ruunsa.fys.ruu.nl> spit@ruunsa.fys.ruu.nl (Werenfried
Spit) writes: 
>
>I know it has been asked before,but is there
>someone having a good solution for the so
>called Feynman slash: a '/' put through a symbol.

To do it right you really should define each symbol with a slash
through it separately to make it look correct.  In place of all
that work though here is \slashchar from TeXsis:


%  \slashchar puts a slash through a character to represent contraction
%  with Dirac matrices. Use \not instead for negation of relations, and use
%  \hbar for hbar.

\def\slashchar#1{\setbox0=\hbox{$#1$}           % set a box for #1 
   \dimen0=\wd0                                 % and get its size
   \setbox1=\hbox{/} \dimen1=\wd1               % get size of /
   \ifdim\dimen0>\dimen1                        % #1 is bigger
      \rlap{\hbox to \dimen0{\hfil/\hfil}}      % so center / in box
      #1                                        % and print #1
   \else                                        % / is bigger
      \rlap{\hbox to \dimen1{\hfil$#1$\hfil}}   % so center #1
      /                                         % and print /
   \fi}                                         %

-- 
Eric Myers		"Frankie say '\relax'"

Center for Relativity, Department of Physics, University of Texas at Austin
myers@emx.utexas.edu  |   myers@utaphy.bitnet   |   myers@ut-emx.UUCP